set nocompatible
source $VIMRUNTIME/vimrc_example.vim
behave xterm

"set fileencodings=utf-8,gb2312
"set fileencodings=utf-8
set fileencodings=utf-8,gb2312
set tabstop=2
set shiftwidth=2
set nocp
set mouse=""
set paste
set smartindent
filetype plugin on

set diffexpr=MyDiff()
set tags=tags;/
set nobackup

nmap <C-C> <Esc>:Setcomment<CR>
imap <C-C> <Esc>:Setcomment<CR>
vmap <C-C> <Esc>:SetcommentV<CR>
command! -nargs=0 Setcomment call s:SET_COMMENT()
command! -nargs=0 SetcommentV call s:SET_COMMENTV()

function! s:SET_COMMENT()
    let lindex=line(".")
    let str=getline(lindex)
    let CommentMsg=s:IsComment(str)
    call s:SET_COMMENTV_LINE(lindex,CommentMsg[1],CommentMsg[0])
endfunction

function! s:SET_COMMENTV()
    let lbeginindex=line("'<") 
    let lendindex=line("'>") 
    let str=getline(lbeginindex)
    let CommentMsg=s:IsComment(str)
    let i=lbeginindex
    while i<=lendindex
         call s:SET_COMMENTV_LINE(i,CommentMsg[1],CommentMsg[0])
        let i=i+1
    endwhile
endfunction

function! s:SET_COMMENTV_LINE( index,pos, comment_flag )
    let poscur = [0, 0,0, 0]
    let poscur[1]=a:index
    let poscur[2]=a:pos+1
    call setpos(".",poscur) 

    if a:comment_flag==0
        exec "normal! 0"
        exec "normal! i//"
    else
        exec "normal! xx"
    endif
endfunction

function! s:IsComment(str)
    let ret= [0, 0] 
    let i=0
    let strlen=len(a:str)
    while i<strlen
        if !(a:str[i]==' ' ||    a:str[i] == '	' )
            let ret[1]=i
            if a:str[i]=='/' && a:str[i+1]=='/'
                let ret[0]=1
            else
                let ret[0]=0
            endif
            return ret
        endif
        let i=i+1
    endwhile
    return [0,0]  
endfunction

function MyDiff()
  let opt = '-a --binary '
  if &diffopt =~ 'icase' | let opt = opt . '-i ' | endif
  if &diffopt =~ 'iwhite' | let opt = opt . '-b ' | endif
  let arg1 = v:fname_in
  if arg1 =~ ' ' | let arg1 = '"' . arg1 . '"' | endif
  let arg2 = v:fname_new
  if arg2 =~ ' ' | let arg2 = '"' . arg2 . '"' | endif
  let arg3 = v:fname_out
  if arg3 =~ ' ' | let arg3 = '"' . arg3 . '"' | endif
  let eq = ''
  if $VIMRUNTIME =~ ' '
    if &sh =~ '\<cmd'
      let cmd = '""' . $VIMRUNTIME . '\diff"'
      let eq = '"'
    else
      let cmd = substitute($VIMRUNTIME, ' ', '" ', '') . '\diff"'
    endif
  else
    let cmd = $VIMRUNTIME . '\diff'
  endif
  silent execute '!' . cmd . ' ' . opt . arg1 . ' ' . arg2 . ' > ' . arg3 . eq
endfunction
colorscheme evening